Indian Standard Time | Time Zone of India

Indian standard time is taken from Mirzapur Uttar Pradesh that is 5.30 hours forward from Greenwich Mean Time. India is situated in central location between the east and the west Asia. Latitudinal and longitudinal extent of India is 30 degree. Latitudinal extent influences the duration of day and night as earth moves from south to north. Geographical mean time is also called Universal Co-ordinated Time (UTC). In 1929 India adopted hourly time zone with 30 Minute offset.

Introduction of modern clock in India

Dutch and English established water clock to measure time during trade . These clock was use to measure european hours but in sixteenth century Portguese brought up mechanical clock to southern part of India . Later it was brought up Surat and nothern part of India. In 1616 Sir Robert Shirley presented a silver clock to Jahangir. But King was not intrested in this clock beacause Indian followed the system of Ghatis, Praharas, Palas. These modern clock was measured 24 hour time.

Indian Standard time proposal during British Time

1. North Eastern time is 6 hours forward by 82.5 and 97.5 degrees longitude.
2. Five and half hours standard time ahead of Greenwich proposed by Royal Geographical Society.
3. Five hours standard time for whole India proposed by Scottish Geographical Society.

Indian Standard time after Independence

National Physical Laboratory has been maintained Indian Standard Time since mid 1950. West Bengal Adopted indian standard time at midnight of 31 August/ 1 September 1947 and Bombay adopted Indian standard time in 1950.

Two Time Zone demand of North Eastern States

North-Eastern states demands six hours ahead of Greenwich Mean Time in Assam, West Bengal, Bihar, Orissa and Madras.

Remaining central and western part of states to follow five hours ahead of Greenwich Time.

These demands was considered by Ministry of Home Affairs in 1948 but government thinks that it will be impractical and not possible to accept it.

Benefits of two Time Zone in India

According to some data increasing half hour time from GMT +5.30 wil save 16 percent electrical energy and 2.7 billion Units of electricity.

2017 Nobel Prize winner Jeffrey C. Hall, Michael Rosbash and Michael Young finds out conclusion on research that human adapted their biological Rhythm. Human secret “Melatonin” hormone after three hour of sunset and made human brain less alert and more susceptible to fatigue.

After Sunrise Human achieves highest alertness during 4-5 hours.

National Physical Laboratory scientist recommended that People of Noth-east India and Andaman & Nicobar Islands people’s productive time is wasted at least 1 hour in morning and 1 hour in night.

Daylight utilisation, Optimisation of biological body cycle , Transport schedule, Office timing, School, hospital, Banks timing can be improved by implementation.

https://timegk.in/free-physical-map-of-india-india-physical-map/

Disadvantages of Two Time Zone in India

Negative political consequences can be arise because different time in two places on same country.

Share market and banks would face difficult situation during trade closing time.

Possibly Airoplane and train accidents may increase because signal needs to be double checked on time -zone changing.

Demarcation of time zone line may impact peoples social and economic relations.